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公开(公告)号：EP1118753B1
公开(公告)日：2010-04-14
申请号：EP01300359.5
申请日：2001-01-16
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0421 , Y02T10/47
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2.发明授权
公开(公告)号：EP1118752B1
公开(公告)日：2004-09-22
申请号：EP01300356.1
申请日：2001-01-16
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
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3.发明公开Method and system for controlling air/fuel level for internal combustion engine with two exhaust banks 审中-公开用于控制具有两个排气管的内燃机的空气/燃料水平的方法和系统
公开(公告)号：EP1118760A3
公开(公告)日：2001-12-05
申请号：EP01300360.3
申请日：2001-01-16
IPC分类号： F02D41/14
CPC分类号： F02D41/1477 , F02D41/1443
摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine (12) having first and second groups of cylinders coupled to first and second exhaust banks, respectively. The first exhaust bank includes a catalyst (20) and at least a pre-catalyst oxygen sensor (18). The second exhaust bank includes a catalyst (24) and no more than one post-catalyst oxygen sensor (26). The oxygen sensors monitor the oxygen content of the exhaust gases in their corresponding exhaust banks and provide feedback signals to a controller (202). The controller (202) uses the feedback signal from the pre-catalyst oxygen sensor (18) to calculate desired A/F values in the first group of cylinders. The controller uses both the feedback signal from the pre-catalyst oxygen sensor (18) and the feedback signal from the post-catalyst oxygen sensor (23) to calculate desired A/F values for the second group of cylinders.
摘要翻译： 一种用于控制内燃机（12）中的空气/燃料比的方法和系统，所述内燃机具有分别连接到第一和第二排气排的第一和第二组汽缸。 第一排气排包括催化剂（20）和至少一个预催化剂氧传感器（18）。 第二排气排包括催化剂（24）和不多于一个催化剂后氧传感器（26）。 氧传感器监测其相应排气排中排气的氧含量并将反馈信号提供给控制器（202）。 控制器（202）使用来自催化剂前传感器（18）的反馈信号来计算第一组汽缸中的期望A / F值。 控制器使用来自前催化剂氧传感器（18）的反馈信号和来自后催化剂氧传感器（23）的反馈信号来计算第二组汽缸的期望A / F值。
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4.发明公开Method and system for controlling air/fuel level for internal combustion engine with two exhaust banks 审中-公开一种用于控制与空气燃料比的两个排气线的内燃机的方法和系统
公开(公告)号：EP1118760A2
公开(公告)日：2001-07-25
申请号：EP01300360.3
申请日：2001-01-16
IPC分类号： F02D41/14
CPC分类号： F02D41/1477 , F02D41/1443
摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine (12) having first and second groups of cylinders coupled to first and second exhaust banks, respectively. The first exhaust bank includes a catalyst (20) and at least a pre-catalyst oxygen sensor (18). The second exhaust bank includes a catalyst (24) and no more than one post-catalyst oxygen sensor (26). The oxygen sensors monitor the oxygen content of the exhaust gases in their corresponding exhaust banks and provide feedback signals to a controller (202). The controller (202) uses the feedback signal from the pre-catalyst oxygen sensor (18) to calculate desired A/F values in the first group of cylinders. The controller uses both the feedback signal from the pre-catalyst oxygen sensor (18) and the feedback signal from the post-catalyst oxygen sensor (23) to calculate desired A/F values for the second group of cylinders.
摘要翻译： 一种用于在分别在内燃机（12）控制空气/燃料比，具有耦合到第一和第二排气银行气缸的第一和第二组，方法和系统。 第一排气长凳包括催化剂（20）和至少一个催化剂预氧传感器（18）。 第二排气长凳包括催化剂（24）和不超过一个的后催化剂氧传感器（26）。 氧传感器监测废气在它们相应的排气银行中的氧含量，并提供反馈信号到控制器（202）。 所述控制器（202）从所述催化剂预氧传感器（18）使用所述反馈信号的第一组汽缸的在计算期望的A / F的值。 所述控制器使用这两种从催化剂前的氧气传感器（18）和从该催化剂后的氧传感器（23）的反馈信号来计算用于所述第二组汽缸的期望的A / F值的反馈信号。
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5.发明公开Method and system for compensating for degraded pre-catalyst oxygen sensor in a two-bank exhaust system 审中-公开在两排排气系统中用于补偿退化的预催化剂氧传感器的方法和系统
公开(公告)号：EP1118758A2
公开(公告)日：2001-07-25
申请号：EP01300357.9
申请日：2001-01-16
CPC分类号： F02D41/1443 , F02D41/1441 , F02D41/1495
摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine (12) having first and second groups of cylinders coupled to first and second exhaust banks (20,28), respectively. Each exhaust bank has a catalyst (16,24), a pre-catalyst oxygen sensor (14,22) and a post-catalyst oxygen sensor (18,26), wherein the oxygen sensors monitor the air/fuel ratio in their respective exhaust banks and provide corresponding feedback signals to a controller. The controller (202) uses the feedback signals to control the air/fuel ratio in the engine cylinders. When it is detected that one or the other of the pre-catalyst oxygen sensors (14,22) has degraded, the controller (202) calculates A/F values for the group of cylinders corresponding to the exhaust bank having a degraded EGO sensor based on feedback signals from the three still-functional oxygen sensors.
摘要翻译： 一种用于控制内燃机（12）中的空气/燃料比的方法和系统，该内燃机具有分别连接到第一和第二排气排（20,28）的第一和第二组汽缸。 每个排气排具有催化剂（16,24），预催化剂氧传感器（14,22）和催化剂后氧传感器（18,26），其中氧传感器监测其各自排气中的空气/燃料比 银行并向控制器提供相应的反馈信号。 控制器（202）使用反馈信号来控制发动机汽缸中的空气/燃料比。 当检测到催化剂前氧传感器（14,22）中的一个或另一个已劣化时，控制器（202）计算与具有劣化的EGO传感器的排气库相对应的一组气缸的A / F值 来自三个静止功能氧传感器的反馈信号。
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6.发明公开
公开(公告)号：EP1118757A2
公开(公告)日：2001-07-25
申请号：EP01300138.3
申请日：2001-01-08
CPC分类号： F02D41/1443 , F02D41/2454 , F02D41/248
摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine (12) having a first group of cylinders and a second group of cylinders. The first group of cylinders is coupled to a catalyst (20) and at least one oxygen sensor (18,22), which provides a first feedback signal. The second group of cylinders is coupled to a catalyst (24) and a post-catalyst oxygen sensor (26), which provides a second feedback signal. A controller (202) uses the first and second feedback signals to calculate a short-term air/fuel bias value for the second group of cylinders. The controller (202) also calculates a new long-term air/fuel bias value corresponding to the current engine speed and engine. The new long-term air/fuel bias value is based on a previously-calculated long-term air/fuel bias value calculated for the same engine load and speed. A total air/fuel bias value is calculated based on the short-term air/fuel bias value and the long-term air/fuel bias value. The new long-term air/fuel bias value is stored for future calculations.
摘要翻译： 一种用于控制具有第一组汽缸和第二组汽缸的内燃机（12）中的空气/燃料比的方法和系统。 第一组汽缸连接到催化剂（20）和至少一个提供第一反馈信号的氧传感器（18,22）。 第二组汽缸连接到催化剂（24）和催化剂后氧传感器（26），后者提供第二反馈信号。 控制器（202）使用第一和第二反馈信号来计算第二组气缸的短期空气/燃料偏差值。 控制器（202）还计算对应于当前发动机转速和发动机的新的长期空气/燃料偏差值。 新的长期空气/燃料偏差值基于先前计算的相同发动机负荷和速度的长期空气/燃料偏差值。 基于短期空气/燃料偏差值和长期空气/燃料偏差值计算总空气/燃料偏差值。 新的长期空气/燃料偏差值被存储用于未来的计算。
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7.发明公开
公开(公告)号：EP1118752A3
公开(公告)日：2003-03-12
申请号：EP01300356.1
申请日：2001-01-16
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method and system for diagnosing catalyst operation in an internal combustion engine having a two-bank (34,36), three EGO sensor structure (38,42,46) includes determining the ratio of the arc length between the post-catalyst EGO sensor (46) signal and the arc length of a pre-catalyst EGO sensor (38) signal over a selected time period. In the system embodying the invention when an exhaust bank (36) is a one-sensor bank having only a post-catalyst EGO sensor (46) and no pre-catalyst EGO sensor, the system uses the arc length from the pre-catalyst EGO sensor (38) in the two-sensor bank (34) to calculate the arc length ratio, thereby allowing calculation of two arc length ratios without two matched pairs of EGO sensors. The ratio indicates the efficiency of the catalyst and may be compared with calibratable or experimentally-determined thresholds to monitor converter efficiency over time.
摘要翻译： 一种用于在具有两行（34,36）内燃机，三个EGO传感器结构（38,42,46）的催化剂诊断操作的方法和系统包括确定采矿催化剂后EGO传感器之间的电弧长度的比率 （46）信号和催化剂预EGO传感器的弧长（38）信号在选定的时间段。 在该系统中实施本发明时排气银行（36）仅具有一个催化剂后EGO传感器（46），并且没有催化剂预EGO传感器的一传感器长椅，本系统采用的弧长从催化剂前EGO 传感器（38）在两传感器工作台（34）来计算的弧长比，由此允许两个弧形长度比计算，而不两个匹配对EGO传感器。 的比率表示催化剂的效率，并且可以与校准表或通过实验确定的阈值进行比较，以监测随着时间转换器的效率。
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公开(公告)号：EP1118753A2
公开(公告)日：2001-07-25
申请号：EP01300359.5
申请日：2001-01-16
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0421 , Y02T10/47
摘要： A method and system for diagnosing catalyst operation in an internal combustion engine (32) having a two-bank, three EGO sensor structure (38,42,46) includes monitoring when the EGO sensors switch states between rich and lean and determining the ratio between a switch count of the post-catalyst EGO sensor signal and a switch count of a pre-catalyst EGO sensor signal over a selected time period. If the exhaust bank is a one-sensor bank having only a post-catalyst EGO sensor (46) and not a pre-catalyst EGO sensor, the system uses the switch count from the pre-catalyst EGO sensor (38) in the two-sensor bank to calculate the switch ratio, thereby allowing calculation of two switch ratios without two matched pairs of EGO sensors. The switch ratio indicates the efficiency of the catalyst and may be compared with later-generated ratios to monitor converter efficiency over time.
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9.发明公开
公开(公告)号：EP1118752A2
公开(公告)日：2001-07-25
申请号：EP01300356.1
申请日：2001-01-16
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method and system for diagnosing catalyst operation in an internal combustion engine having a two-bank (34,36), three EGO sensor structure (38,42,46) includes determining the ratio of the arc length between the post-catalyst EGO sensor (46) signal and the arc length of a pre-catalyst EGO sensor (38) signal over a selected time period. In the system embodying the invention when an exhaust bank (36) is a one-sensor bank having only a post-catalyst EGO sensor (46) and no pre-catalyst EGO sensor, the system uses the arc length from the pre-catalyst EGO sensor (38) in the two-sensor bank (34) to calculate the arc length ratio, thereby allowing calculation of two arc length ratios without two matched pairs of EGO sensors. The ratio indicates the efficiency of the catalyst and may be compared with calibratable or experimentally-determined thresholds to monitor converter efficiency over time.
摘要翻译： 一种用于在具有两行（34,36）内燃机，三个EGO传感器结构（38,42,46）的催化剂诊断操作的方法和系统包括确定采矿催化剂后EGO传感器之间的电弧长度的比率 （46）信号和催化剂预EGO传感器的弧长（38）信号在选定的时间段。 在该系统中实施本发明时排气银行（36）仅具有一个催化剂后EGO传感器（46），并且没有催化剂预EGO传感器的一传感器长椅，本系统采用的弧长从催化剂前EGO 传感器（38）在两传感器工作台（34）来计算的弧长比，由此允许两个弧形长度比计算，而不两个匹配对EGO传感器。 的比率表示催化剂的效率，并且可以与校准表或通过实验确定的阈值进行比较，以监测随着时间转换器的效率。
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公开(公告)号：EP1118753A3
公开(公告)日：2003-06-18
申请号：EP01300359.5
申请日：2001-01-16
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0421 , Y02T10/47
摘要： A method and system for diagnosing catalyst operation in an internal combustion engine (32) having a two-bank, three EGO sensor structure (38,42,46) includes monitoring when the EGO sensors switch states between rich and lean and determining the ratio between a switch count of the post-catalyst EGO sensor signal and a switch count of a pre-catalyst EGO sensor signal over a selected time period. If the exhaust bank is a one-sensor bank having only a post-catalyst EGO sensor (46) and not a pre-catalyst EGO sensor, the system uses the switch count from the pre-catalyst EGO sensor (38) in the two-sensor bank to calculate the switch ratio, thereby allowing calculation of two switch ratios without two matched pairs of EGO sensors. The switch ratio indicates the efficiency of the catalyst and may be compared with later-generated ratios to monitor converter efficiency over time.
摘要翻译： 一种用于内燃发动机（32），诊断催化剂操作具有两银行，三个EGO传感器结构（38,42,46）的方法和系统包括监测当浓和稀和确定性采矿之间的比值之间的EGO传感器开关状态 催化剂后EGO传感器信号的开关计数和催化剂预EGO传感器信号随选定的时间段的开关计数。 如果排气银行是仅具有一个催化剂后EGO传感器（46），而不是一个催化剂预EGO传感器的一传感器长椅，系统使用从双催化剂预EGO传感器（38）的开关计数 传感器替补来计算开关比，由此允许两个比率的计算切换，而无需两个匹配对EGO传感器。 开关比表示，催化剂的效率，并且可以与所生成的后述的比率进行比较，以监测随着时间转换器的效率。
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